Apparatus for the compression of gas or air for lamps.



' PATENTED APR. 21, 1908.

W. H. CHIPPBRFIBLD. APPARATUS FOR THE COMPRESSION OF GAS OR AIR FORLAMPS. APPLICATION FILED r313. 16, 1907.

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No. 885,819 PATENTED APR. 21, 1908. W. H. GHIPPERFIBLD.

APPARATUS FOR THE COMPRESSION OF GAS OR. AIR'FOR LAMPS. APPLICATIONFILED r1113. 16, 1907.

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" .UNITED STATES PATENT oEEIoE.

WILLIAM HOWARD CHIPPERFIELD, OF LONDON, ENGLAND.

APPARATUS FOR THE COMPRESSION OF GAS OR AIR FOR LAMPS.

To all whom it may concern:

Be it known that 1, WILLIAM HOWARD OHIPPERFIELD, a subject of the Kingof Great Britain and Ireland, residing at London, England, have inventednew and useful Im provements in Apparatus for the Compression of Gas orAir for Lamps, of which the following is a specification.

This invention relates to improved apparatus for the compression of gas,or air, for amps, and it has for its objects to provide means wherebythe compressing apparatus will be reliable in its operation; to reducethe cost of the manufacture thereof, and to increase its durability.These objects are attained by the apparatus illustrated in theaccompanying drawings in which Figure 1 is an elevation of a lamp withthe improved compressing apparatus fitted thereto. Fig. 2 is a sectionalelevation thereof, to an enlarged scale. Fig. 3 is an elevation, partlyin section to an enlarged scale, of inlet and outlet valves to thecompressor. Fig. 4 is anelevation, partly in section, to an enlargedscale of a cylindrical slide valve.

Similar letters refer to like parts throughout the several views.

According to this invention, the lamp is provided with a vessel, orhollow body a, of

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metal, which is placed in position above the mantle, or burner, b, sothat the heat therefrom will impinge upon the lower portion thereof. a:is the pipe leading from the fuel supply. This vessel a has an opening 0formed centrally in its upper end, to the boundary of which is attacheda hollow flexible, extensible and compressible metallic body (1,preferably annular in form to which is attached a further hollow body ecomposed of any suitable material, but preferably of metal, and free tomove within the outer ves- This inner hollow body e is constructed intwo parts e, e as shown, or it may have a dividing diaphragm about itscenter, its weight being held in suspension by a spring f, through themedium of the rod 9, the upper end of the spring being attached to asupporting rod h.

The central opening 0 in the upper end of the outer body a is closed bya cover i to which are connected inlet and outlet valves, the outletvalve communicating by pipe w Specification of Letters Patent.

Application filed February 16, 1907.

Patented April 21, 1908.

Serial No. 357,773.

with a receiver 7c placed in any convenient position and provided withsuitable apparatus, such as Z for equalizing the pressure of the gas, orair, within, which is then conducted through the pipe w to the burner l)for use as required, the inlet valve j communicating from the atmosphereinto the flexible metallic body (Z.

The element Z consists of a flexible metallic body Z having a weight Zresting thereon so that when the pressure of gas in the chamber aexceeds the predetermined pressure set by the weight Z the flexible bodyZ contracts and thus reduces the pressure.

The lower end of the rod 9 is attached to the top of the upper innerchamber a, the rod passing up through the cover 'i and capable ofreciprocating movement. A cylindrical slide valve m is attached to theouter vessel or chamber a and is provided with ports which are open tothe atmosphere at each end of the stroke. An arm 0 mounted on theconnecting rod 9 and moving therewith extends above the slide valve mthereby insuring the downward movement of same. Of course when theapparatus is to be used for the compression of the gas to be consumed atthe burner, the inlet valve 3' will be coupled up to the source ofsupply in any suitable or convenient manner, instead of being simplyopen to the atmosphere.

The application of heat to the lower end of the apparatus will expandthe air in the outer cham er (1, thereby increasing its pressure,causing the inner flexible metal body (1 to contract, and carry with itthe hollow body 6, thereby raising the valve m. This movement willcontinue until the ports 1 in the valve m are open to the atmosphere,when the expanded air in the outer chamber a will be allowed to escapeto the atmosphere through the ports 2. The pressure in the outer vessela having thereby been reduced, the vessels 6 and 6 will commence to fallby gravity, thereby causin the expanded air at the bottom and heateclendof the chamber to pass upward between the inner and outer chambers tothe cooler ends, where contraction takes place, creating a partialvacuum by which the further downward travel of the chamber is continued,until the ports 2 in the valve or, which has been caused to follow themovement of the inner chamber by the action of the spring n, again openscommunication between the outer chamber and the atmosphere through theopen upper end, thereby admitting a fresh supply of air from theatmosphere to take the place of the air previously released, themovements and operations recurring in regular cyclical order.

The motion imparted to the inner flexible metal body d, causes it to actas a pump, by which gas from the gas supply, or air from the atmosphere,will be drawn into it through the valve j, and expelled through theoutlet valve j at an increased pressure, to the receiver 7r.

I am aware that prior to this invention it was well known to compressair, or gas, for

incandescent gas lighting by apparatus in which the attainment of theincreased gas, or air, pressure is effected by the direct expansiveaction of heat upon the gas or air to be used, without intermediatecompressing accessories, and I do not Wish such apparatus to beunderstood as of this invention, but

What I do claim as of my invention and desire to secure by LettersPatent, is

.1. In apparatus for the compression of gas, or air, for lamps thecombination of a burner a vessel or chamber of metal arranged above theburner and having an opening formed in its upper end, an inner hollowbody free to move within the outer vessel or chamber; and a hollowflexible, extensible, and .compressible metallic body one end of whichis attached to the boundary of said opening and the other to the innerhollow body.

2. In apparatus for the compression of gas, or air, for lamps thecombination with a burner, a vessel or chamber of metal arranged abovethe burner and having an opening formed in its upper end, of an innerhollow body constructed in two parts free to move Within the outervessel.

3. In apparatus for the compression of gas, or air, for lamps thecombination with a burner, a vessel or chamber of metal, arranged abovethe burner and having an 0 ening formed in its upper end, an innerhollow body free to move within the outer vessel, and a hollow flexible,extensible, and compressible metallic body attached to the boundary ofsaid opening and to the inner hollow movable body of a cover for closingthe said opening, a connection from the vessel to the burner, an outletin said connection an inlet valve in the cover and a fluid supplyconnected with said inlet valve.

4. In apparatus for the compression of gas, or .air, for lamps thecombination with a burner, a vessel, or chamber, of metal arranged abovethe burner, and having an open-- ing formed in its upper end, an innerhollow body free to move Within the outer vessel,

and a hollow flexible extensible and compressible metallic body attachedto the boundary of said opening and to the inner hollow movable body; ofa cover for closing the opening a connection from the interior of theflexible metallic body to the burner, an outlet valve in saidconnection, an inlet valve in the cover and a fluid supply connectedwith the said inlet valve; substantially as and for the purposespecified.

5. In apparatus for the compression of gas or air for lamps, thecombination with a burner, a vessel or chamber of metal, arranged abovethe burner and having an opening formed in its upper end, an innerhollow body free to move within the outer vessel, and a hollow flexibleextensible and compressible metallic body attached to the boundary ofsaid opening and to the inner hollow movable body, of a cover forclosing the opening, inlet and outlet valves connected to said cover andto the burner, a rod attached to the top of the inner chamber capable ofreciprocating movement through the cover, a spring having one endconnected to said rod and a supporting rod connected to the other endthereof, substantially as and for the purposes specified.

6. In apparatus for the compression of gas, or air, for lamps thecombination with a burner a vessel or chamber of metal, arranged abovethe burner and having an opening formed in its upper end, and a hollowflexible extensible and compressible metallic body attached to theboundary of said opening and to the inner hollow movable body;

of a cover for closing the said opening, inlet and outlet valves on saidcover, a connection from said outlet valve to the burner, a rod attachedto the top of the inner chamber capable of reciprocating movementthrough the cover a supporting rod, a spring having one end connected tosaid supporting rod and its other end connected with the reciprocatingrod; and a cylindrical slide valve attached to the outer vessel, orchamber, provided with ports which are open to the atmosphere at eachend of its stroke; substantially as and for the purposes specified.

7. In apparatus for the compression of gas, or air, for lam s thecombination with a burner, a vesse or chamber of metal, ar-

ranged above the burner and having an opening formed in its upper end,and a hollow flexible extensible and compressible metallic body attachedto the boundary of said opening and to the inner hollow movable body; ofa cover for closing the said inlet and outlet valves in said cover, aconnection from the outlet valve to the burner, a rod attached to thetop of the inner chamber capable of re ciprocating movement through thecover a spring to which the rod is suspended, a support for the spring;a cylindrical slide valve In testimony whereof I have signed my attachedto the outer vessel, or chamber proname to this specification in thepresence of videcl With ports which are open to the attwo subscribingWitnesses.

mosphere at each end of its stroke and an WILLIAM HOWARD CHIPPERFIEIJarm mounted upon the reciprocating rod WVitnesses:

and extending above the slide valve m sub- JAMES G. STOKES,

stantially as and for the purposes specified. H. D. J AMESON.

